<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="https://www.baidu.com/">
        姓名:<input type="text">
        <br>
        密码:<input type="password">
        <br>
        性别<input type="radio" name="sex" id="man">
         <label for="man">男</label>
        <input type="radio" name="sex" checked="checked" id="female">
        <label for="female">女</label>
        <br>
        爱好:<p><input type="checkbox">摄影</p>
           <p><input type="checkbox">运动</p> 
        <p><input type="checkbox">美食</p>
        <br>
        <input type="button" value="please submit" onclick="alert('hello world')">
         <input type="reset" value="清空">
        <br>
        <textarea cols="30" rows="10">

        </textarea>
    </form>
    <br>
    <select>
        <option>--请选择城市--</option>
        <option selected="selected">北京</option>
        <option>上海</option>
        <option>深圳</option>
    </select>
</body>
</html>